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(No Model.)

M. N. LAUPENBURG.

. PLOW STANDARD. No. 374.686. Patented Dec. 13, 1887.

UNITE STATES PATENT OFFICE.

MICHAEL NEY LAUFENBURG, OF SAN FRANCISCO, ASSIGNOR OF ONE-HALF TO W. D. NELSON, OF TRAVER, CALIFORNIA. I

PLOW-STANDARD.

SPECIFICATION forming part of Letters Patent No. 374,686, dated December 13, 1887.

Application filed Juno 1, 1887. Serial No. 240,002. (No model.)

To all whom, it may concern:

Be it known that I, MrcHAEL NEY LAUFEN- BURG, of the city and county of San Francisco, State of California, have invented an Improvement in Plow-Standards; and I hereby declare the following to be afull, clear, and exact description of the same.

My invention relates to an improvement in plows; and it consists in curving the standard backwardly from the top of the mold-board,

so that it presents no obstruction to Weeds or straw and prevents all choking of the plow from this cause.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is a view showing my standard as applied to ironbeam plows. Fig. 2 is a rear view of the same,showing the attachment of the shoe. Fig. 3 is a plan view showing the relative positions of the standard and the mold-board. Fig. 4 is a modified form of the attachment. Fig. 5 shows the application to wooden-beam plows.

In the construction of plows it is usual to carry the standard up nearly or quite vertically from the plow to the beam; but this is objectionable, because it becomes clogged with weeds and straw, which lodge across it when turned up by the mold-board, rendering it necessary to stop frequently to clear it.

In my invention, A is the mold-board of a plow. B is the beam. 0 is the standard, which is attached to the landside at some distance behind the mold-board or curved backward from the top of the mold-board, so that for some distance back from this point it is nearly orquite horizontal,after which it curves upward and is united to the plow-beam.

In the construction shown in Figs. 1, 2, 3

0 the lower end of the standard is extended so as to be bolted to the landside at some distance behind the front inneredge of the mold-board, while the top of the latter curves outward and to one side of the plane of the standard, so as to turn the weeds and straw (with which the land is often clogged and overrun) to one side and entirely away from the standard.

In the construction shown in the first four figures, D is a separate shoe or frog having one end fitted and bolted'to the standard 0 a short distance above the landside. The front end is expanded or formed with a foot which fits andis secured to theinner rear portion of the mold-board, and it formsa rigid brace and support for the plow. In Fig. 4 the standard is curved in line with the top of the mold-board, and the foot which extends down to the landside is a separate piece bolted to it.

In Fig. 5 the standard has the frog or shoe to D formed in one piece with it, the result being the same. By this construotion,when working in high stubble and heavy undergrowth, this material will pass over and be turned to one side by the mold board without coming in contact with the standard, and no accumulation can take place against it.

I Having thus described my invention. what I claim as new, and desire to secure by Letters Patent, is

In a plow, the mold-board and landside standingin relation toeach other as described,

the standard curved backwardly and upwardly in the vertical plane of the landside, incombination with the shoe or foot having one end attached to or formed with the standard and the other curved to fit the interior of the mold-board, to whichit is bolted, substantially as herein described.

In witness whereof I have hereunto set my hand.

I MICHAEL NEY LAUFENBURG.

Witnesses: I

W. D. NELsoN, WM. 0. DIoKsoN. 

